Development of a measurement method of sea-ice thickness by acoustic Doppler current profiler

声学多普勒海流剖面仪测量海冰厚度方法的研制

• 批准号: 23654163
• 负责人: FUKAMACHI Yasushi
• 金额: $ 2.25万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23654163/
• 关键词: 海氷厚; 係留観測; 超音波ドップラー流速計; 超音波氷厚計; 海氷

Sea-ice thickness is generally measured by specific ice-profiling sonar (IPS). We carried out mooring observations off the northern Alaska to develop a method of sea-ice thickness measurement by widely-used oceanographic instrument, acoustic Doppler current profiler (ADCP). We have successfully obtained valid data by a pair of an IPS and an ADCP at total of four locations over three-year period and derived sea-ice draft from raw IPS data.Using sea-ice and oceanic data obtained by our mooring observations, we have investigated break-up of coastal landfast sea ice, production of supercooled water and frazil ice within a coastal polynya, and compared our ice-thickness data by IPS with those by airborne electromagnetic sensor and ice-drift data by ADCP with those by coastal radar.

海冰厚度通常由特定的冰剖面声纳测量。为了发展一种利用海洋学仪器声学多普勒海流剖面仪（ADCP）测量海冰厚度的方法，我们在阿拉斯加北方海域进行了系泊观测。我们利用IPS和ADCP在四个观测点连续三年获得了有效的资料，并利用IPS资料反演了海冰吃水，利用我们的系泊观测资料，研究了沿海冰穴内的海冰破碎、过冷水和冰裂的产生，以及海冰的融化过程。并将IPS冰厚资料与航空电磁传感器冰厚资料、ADCP冰漂资料与海岸雷达冰漂资料进行了比较。

项目成果

Warm water and swift currents : Two years of data from moorings under coastal sea ice in the Chukchi Sea

温暖的海水和湍急的水流：楚科奇海沿岸海冰下系泊点的两年数据

• 发表时间: 2011
• 作者: Mahoney;A.R
• 通讯作者: A.R

Characteristics of sea-ice draft revealed by a moored ice-profiling sonar in the Chukchi Sea off Barrow, Alaska

阿拉斯加巴罗附近楚科奇海的停泊冰剖面声纳揭示的海冰吃水特征

• 作者: Y. Fukamachi;D. Simizu;K. I. Ohshima;K. Iwamoto;H. Eicken;and A. R. Mahoney
• 通讯作者: and A. R. Mahoney

A study of formation processes of supercooled water and frazil ice in a coastal polynya

沿海冰间湖过冷水和碎冰形成过程的研究

• 发表时间: 2014
• 作者: Ito M

Mooring measurement of sea-ice thickness in the Chukchi Sea off Barrow Alaska

阿拉斯加巴罗附近楚科奇海海冰厚度的系泊测量

• 发表时间: 2013
• 作者: 湯浅万紀子;山本順司;伊東 素代;伊藤 優人;山本順司;清水 大輔
• 通讯作者: 清水 大輔

2010 年夏季北極海バロー海底谷における熱輸送

2010 年夏季北冰洋巴罗峡谷的热传输

• 发表时间: 2013
• 作者: 湯浅万紀子;山本順司;伊東 素代
• 通讯作者: 伊東 素代